How does Swarovski make the 56mm SLC better than before? Starting with the slimmer Abbe-König prism system, the Swarovski SLC now sports slender barrels with integrated depressions for a great feel and stability in hands of all sizes. Adjustments to the entire optical system maximize the function of fluoride HD glass objective lenses for excellent resolution and contrast, as well as minimizing color fringing. The redesign also provides a lighter weight, more eye relief, wider field of view, and increased light transmission. The 56mm SLC always stands out in the field by overcoming poor light conditions and providing clearer details at faraway distances.

I bought the Vortex Kaibab's 15x56 Bino's and they are very nice. But in low light and distance Swarovski is the way to go. They are very bright and the clarity is Awesome and well worth the $$ money $$. I tried both Vortex and Swarovski.. Swarovski is the best.No Regrets... Worth every penny